#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/blkdev.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <scsi/scsi.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_driver.h>
+#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_ioctl.h> /* For the door lock/unlock commands */
-#include <scsi/scsi_request.h>
#include "scsi_logging.h"
#include "sr.h"
+MODULE_DESCRIPTION("SCSI cdrom (sr) driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_CDROM_MAJOR);
+
#define SR_DISKS 256
#define MAX_RETRIES 3
#define SR_CAPABILITIES \
(CDC_CLOSE_TRAY|CDC_OPEN_TRAY|CDC_LOCK|CDC_SELECT_SPEED| \
CDC_SELECT_DISC|CDC_MULTI_SESSION|CDC_MCN|CDC_MEDIA_CHANGED| \
- CDC_PLAY_AUDIO|CDC_RESET|CDC_IOCTLS|CDC_DRIVE_STATUS| \
+ CDC_PLAY_AUDIO|CDC_RESET|CDC_DRIVE_STATUS| \
CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_DVD_RAM|CDC_GENERIC_PACKET| \
CDC_MRW|CDC_MRW_W|CDC_RAM)
/* This semaphore is used to mediate the 0->1 reference get in the
* face of object destruction (i.e. we can't allow a get on an
* object after last put) */
-static DECLARE_MUTEX(sr_ref_sem);
+static DEFINE_MUTEX(sr_ref_mutex);
static int sr_open(struct cdrom_device_info *, int);
static void sr_release(struct cdrom_device_info *);
.get_mcn = sr_get_mcn,
.reset = sr_reset,
.audio_ioctl = sr_audio_ioctl,
- .dev_ioctl = sr_dev_ioctl,
.capability = SR_CAPABILITIES,
.generic_packet = sr_packet,
};
{
struct scsi_cd *cd = NULL;
- down(&sr_ref_sem);
+ mutex_lock(&sr_ref_mutex);
if (disk->private_data == NULL)
goto out;
cd = scsi_cd(disk);
kref_put(&cd->kref, sr_kref_release);
cd = NULL;
out:
- up(&sr_ref_sem);
+ mutex_unlock(&sr_ref_mutex);
return cd;
}
-static inline void scsi_cd_put(struct scsi_cd *cd)
+static void scsi_cd_put(struct scsi_cd *cd)
{
struct scsi_device *sdev = cd->device;
- down(&sr_ref_sem);
+ mutex_lock(&sr_ref_mutex);
kref_put(&cd->kref, sr_kref_release);
scsi_device_put(sdev);
- up(&sr_ref_sem);
+ mutex_unlock(&sr_ref_mutex);
}
/*
/* check multisession offset etc */
sr_cd_check(cdi);
- /*
- * If the disk changed, the capacity will now be different,
- * so we force a re-read of this information
- * Force 2048 for the sector size so that filesystems won't
- * be trying to use something that is too small if the disc
- * has changed.
- */
- cd->needs_sector_size = 1;
- cd->device->sector_size = 2048;
+ get_sectorsize(cd);
}
return retval;
}
case ILLEGAL_REQUEST:
if (!(SCpnt->sense_buffer[0] & 0x90))
break;
- if (!blk_fs_request(SCpnt->request))
- break;
error_sector = (SCpnt->sense_buffer[3] << 24) |
(SCpnt->sense_buffer[4] << 16) |
(SCpnt->sense_buffer[5] << 8) |
return 0;
}
- /*
- * these are already setup, just copy cdb basically
- */
- if (SCpnt->request->flags & REQ_BLOCK_PC) {
- struct request *rq = SCpnt->request;
-
- if (sizeof(rq->cmd) > sizeof(SCpnt->cmnd))
- return 0;
-
- memcpy(SCpnt->cmnd, rq->cmd, sizeof(SCpnt->cmnd));
- if (!rq->data_len)
- SCpnt->sc_data_direction = DMA_NONE;
- else if (rq_data_dir(rq) == WRITE)
- SCpnt->sc_data_direction = DMA_TO_DEVICE;
- else
- SCpnt->sc_data_direction = DMA_FROM_DEVICE;
-
- this_count = rq->data_len;
- if (rq->timeout)
- timeout = rq->timeout;
-
- SCpnt->transfersize = rq->data_len;
- goto queue;
- }
-
- if (!(SCpnt->request->flags & REQ_CMD)) {
- blk_dump_rq_flags(SCpnt->request, "sr unsup command");
- return 0;
- }
-
/*
* we do lazy blocksize switching (when reading XA sectors,
* see CDROMREADMODE2 ioctl)
}
if (s_size != 512 && s_size != 1024 && s_size != 2048) {
- printk("sr: bad sector size %d\n", s_size);
+ scmd_printk(KERN_ERR, SCpnt, "bad sector size %d\n", s_size);
return 0;
}
size += sg[i].length;
if (size != SCpnt->request_bufflen && SCpnt->use_sg) {
- printk(KERN_ERR "sr: mismatch count %d, bytes %d\n",
- size, SCpnt->request_bufflen);
+ scmd_printk(KERN_ERR, SCpnt,
+ "mismatch count %d, bytes %d\n",
+ size, SCpnt->request_bufflen);
if (SCpnt->request_bufflen > size)
SCpnt->request_bufflen = SCpnt->bufflen = size;
}
*/
if (((unsigned int)SCpnt->request->sector % (s_size >> 9)) ||
(SCpnt->request_bufflen % s_size)) {
- printk("sr: unaligned transfer\n");
+ scmd_printk(KERN_NOTICE, SCpnt, "unaligned transfer\n");
return 0;
}
*/
SCpnt->transfersize = cd->device->sector_size;
SCpnt->underflow = this_count << 9;
-
-queue:
SCpnt->allowed = MAX_RETRIES;
SCpnt->timeout_per_command = timeout;
static int sr_block_open(struct inode *inode, struct file *file)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
- struct scsi_cd *cd = scsi_cd(inode->i_bdev->bd_disk);
+ struct scsi_cd *cd;
int ret = 0;
if(!(cd = scsi_cd_get(disk)))
{
struct scsi_cd *cd = scsi_cd(inode->i_bdev->bd_disk);
struct scsi_device *sdev = cd->device;
+ void __user *argp = (void __user *)arg;
+ int ret;
- /*
- * Send SCSI addressing ioctls directly to mid level, send other
- * ioctls to cdrom/block level.
- */
- switch (cmd) {
- case SCSI_IOCTL_GET_IDLUN:
- case SCSI_IOCTL_GET_BUS_NUMBER:
- return scsi_ioctl(sdev, cmd, (void __user *)arg);
+ /*
+ * Send SCSI addressing ioctls directly to mid level, send other
+ * ioctls to cdrom/block level.
+ */
+ switch (cmd) {
+ case SCSI_IOCTL_GET_IDLUN:
+ case SCSI_IOCTL_GET_BUS_NUMBER:
+ return scsi_ioctl(sdev, cmd, argp);
}
- return cdrom_ioctl(file, &cd->cdi, inode, cmd, arg);
+
+ ret = cdrom_ioctl(file, &cd->cdi, inode, cmd, arg);
+ if (ret != ENOSYS)
+ return ret;
+
+ /*
+ * ENODEV means that we didn't recognise the ioctl, or that we
+ * cannot execute it in the current device state. In either
+ * case fall through to scsi_ioctl, which will return ENDOEV again
+ * if it doesn't recognise the ioctl
+ */
+ ret = scsi_nonblockable_ioctl(sdev, cmd, argp, NULL);
+ if (ret != -ENODEV)
+ return ret;
+ return scsi_ioctl(sdev, cmd, argp);
}
static int sr_block_media_changed(struct gendisk *disk)
if (!scsi_block_when_processing_errors(sdev))
goto error_out;
- /*
- * If this device did not have media in the drive at boot time, then
- * we would have been unable to get the sector size. Check to see if
- * this is the case, and try again.
- */
- if (cd->needs_sector_size)
- get_sectorsize(cd);
return 0;
error_out:
goto fail;
error = -ENOMEM;
- cd = kmalloc(sizeof(*cd), GFP_KERNEL);
+ cd = kzalloc(sizeof(*cd), GFP_KERNEL);
if (!cd)
goto fail;
- memset(cd, 0, sizeof(*cd));
kref_init(&cd->kref);
cd->driver = &sr_template;
cd->disk = disk;
cd->capacity = 0x1fffff;
- cd->needs_sector_size = 1;
cd->device->changed = 1; /* force recheck CD type */
cd->use = 1;
cd->readcd_known = 0;
get_capabilities(cd);
sr_vendor_init(cd);
- snprintf(disk->devfs_name, sizeof(disk->devfs_name),
- "%s/cd", sdev->devfs_name);
disk->driverfs_dev = &sdev->sdev_gendev;
set_capacity(disk, cd->capacity);
disk->private_data = &cd->driver;
disk->flags |= GENHD_FL_REMOVABLE;
add_disk(disk);
- printk(KERN_DEBUG
- "Attached scsi CD-ROM %s at scsi%d, channel %d, id %d, lun %d\n",
- cd->cdi.name, sdev->host->host_no, sdev->channel,
- sdev->id, sdev->lun);
+ sdev_printk(KERN_DEBUG, sdev,
+ "Attached scsi CD-ROM %s\n", cd->cdi.name);
return 0;
fail_put:
unsigned char *buffer;
int the_result, retries = 3;
int sector_size;
- struct scsi_request *SRpnt = NULL;
request_queue_t *queue;
buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
if (!buffer)
goto Enomem;
- SRpnt = scsi_allocate_request(cd->device, GFP_KERNEL);
- if (!SRpnt)
- goto Enomem;
do {
cmd[0] = READ_CAPACITY;
memset((void *) &cmd[1], 0, 9);
- /* Mark as really busy */
- SRpnt->sr_request->rq_status = RQ_SCSI_BUSY;
- SRpnt->sr_cmd_len = 0;
-
memset(buffer, 0, 8);
/* Do the command and wait.. */
- SRpnt->sr_data_direction = DMA_FROM_DEVICE;
- scsi_wait_req(SRpnt, (void *) cmd, (void *) buffer,
- 8, SR_TIMEOUT, MAX_RETRIES);
+ the_result = scsi_execute_req(cd->device, cmd, DMA_FROM_DEVICE,
+ buffer, 8, NULL, SR_TIMEOUT,
+ MAX_RETRIES);
- the_result = SRpnt->sr_result;
retries--;
} while (the_result && retries);
- scsi_release_request(SRpnt);
- SRpnt = NULL;
-
if (the_result) {
cd->capacity = 0x1fffff;
sector_size = 2048; /* A guess, just in case */
- cd->needs_sector_size = 1;
} else {
#if 0
if (cdrom_get_last_written(&cd->cdi,
printk("%s: unsupported sector size %d.\n",
cd->cdi.name, sector_size);
cd->capacity = 0;
- cd->needs_sector_size = 1;
}
cd->device->sector_size = sector_size;
* Add this so that we have the ability to correctly gauge
* what the device is capable of.
*/
- cd->needs_sector_size = 0;
set_capacity(cd->disk, cd->capacity);
}
Enomem:
cd->capacity = 0x1fffff;
- sector_size = 2048; /* A guess, just in case */
- cd->needs_sector_size = 1;
- if (SRpnt)
- scsi_release_request(SRpnt);
+ cd->device->sector_size = 2048; /* A guess, just in case */
goto out;
}
{
unsigned char *buffer;
struct scsi_mode_data data;
- struct scsi_request *SRpnt;
unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_sense_hdr sshdr;
unsigned int the_result;
int retries, rc, n;
- static char *loadmech[] =
+ static const char *loadmech[] =
{
"caddy",
"tray",
""
};
- /* allocate a request for the TEST_UNIT_READY */
- SRpnt = scsi_allocate_request(cd->device, GFP_KERNEL);
- if (!SRpnt) {
- printk(KERN_WARNING "(get_capabilities:) Request allocation "
- "failure.\n");
- return;
- }
/* allocate transfer buffer */
buffer = kmalloc(512, GFP_KERNEL | GFP_DMA);
if (!buffer) {
printk(KERN_ERR "sr: out of memory.\n");
- scsi_release_request(SRpnt);
return;
}
memset((void *)cmd, 0, MAX_COMMAND_SIZE);
cmd[0] = TEST_UNIT_READY;
- SRpnt->sr_cmd_len = 0;
- SRpnt->sr_sense_buffer[0] = 0;
- SRpnt->sr_sense_buffer[2] = 0;
- SRpnt->sr_data_direction = DMA_NONE;
-
- scsi_wait_req (SRpnt, (void *) cmd, buffer,
- 0, SR_TIMEOUT, MAX_RETRIES);
+ the_result = scsi_execute_req (cd->device, cmd, DMA_NONE, NULL,
+ 0, &sshdr, SR_TIMEOUT,
+ MAX_RETRIES);
- the_result = SRpnt->sr_result;
retries++;
} while (retries < 5 &&
(!scsi_status_is_good(the_result) ||
- ((driver_byte(the_result) & DRIVER_SENSE) &&
- SRpnt->sr_sense_buffer[2] == UNIT_ATTENTION)));
+ (scsi_sense_valid(&sshdr) &&
+ sshdr.sense_key == UNIT_ATTENTION)));
/* ask for mode page 0x2a */
rc = scsi_mode_sense(cd->device, 0, 0x2a, buffer, 128,
- SR_TIMEOUT, 3, &data);
+ SR_TIMEOUT, 3, &data, NULL);
if (!scsi_status_is_good(rc)) {
/* failed, drive doesn't have capabilities mode page */
cd->cdi.speed = 1;
cd->cdi.mask |= (CDC_CD_R | CDC_CD_RW | CDC_DVD_R |
- CDC_DVD | CDC_DVD_RAM |
- CDC_SELECT_DISC | CDC_SELECT_SPEED);
- scsi_release_request(SRpnt);
+ CDC_DVD | CDC_DVD_RAM |
+ CDC_SELECT_DISC | CDC_SELECT_SPEED |
+ CDC_MRW | CDC_MRW_W | CDC_RAM);
kfree(buffer);
printk("%s: scsi-1 drive\n", cd->cdi.name);
return;
cd->device->writeable = 1;
}
- scsi_release_request(SRpnt);
kfree(buffer);
}
* sr_kref_release - Called to free the scsi_cd structure
* @kref: pointer to embedded kref
*
- * sr_ref_sem must be held entering this routine. Because it is
+ * sr_ref_mutex must be held entering this routine. Because it is
* called on last put, you should always use the scsi_cd_get()
* scsi_cd_put() helpers which manipulate the semaphore directly
* and never do a direct kref_put().
del_gendisk(cd->disk);
- down(&sr_ref_sem);
+ mutex_lock(&sr_ref_mutex);
kref_put(&cd->kref, sr_kref_release);
- up(&sr_ref_sem);
+ mutex_unlock(&sr_ref_mutex);
return 0;
}
git://git.onelab.eu / linux-2.6.git / blobdiff